The time rate of loss of heat by a body is proportional to the…
The time rate of loss of heat by a body is proportional to the
A. temperature of its surroundings
B. temperature of the body
C. difference in temperature between the body and its surroundings
D. ratio of the temperature of the body to that of its surroundings.
When a body losses heat, it is simply because its temperature is greater than that of the surrounding, and when it gains heat, it is because its temperature is less than that of the surrounding. Basically, the time rate at which heat is lost or gained by a body depends on the temperature difference between the body and the surrounding environment it interacts with.
Now for the right answer to the above question:
- Option A is incorrect. not the temperature of its surroundings alone.
- Option B is incorrect. not the temperature of the body alone.
- C is correct. yes, because heat is transferring from the body to the surrounding.
- D is not the correct answer. No, not ratio but difference.
You may please note these/this:
- As long as energy is moving from the body to its surrounding, the difference in temperature between these two will determine the rate at which this energy transfer will occur.
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/ culled from 2018 JAMB-UTME physics question 28 /
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